Home / 15,509.48-21,391.61-9,839.33

Finding the Fourth Proportional to 15,509.48, 21,391.61 and 9,839.33

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Solution

The fourth proportional to 15,509.48, 21,391.61 and 9,839.33 is: 13,571.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,509.48 : 21,391.61 = 9,839.33 : x
  2. Step 2: Convert to fraction form
    15,509.48/21,391.61 = 9,839.33/x
  3. Step 3: Cross multiply
    15,509.48x = 21,391.61 × 9,839.33
  4. Step 4: Simplify right side
    15,509.48x = 210,479,110.02
  5. Step 5: Solve for x
    x = 210,479,110.02/15,509.48
  6. Step 6: Final answer
    x = 13,571.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.